Abstract
Low-power trapping of nanoscale objects can be achieved by using the enhanced fields near plasmonic nanoantennas. Unfortunately, in this approach the trap site is limited to the position of the plasmonic hotspots and continuous dynamic manipulation is not feasible. Here, we report a low-frequency electrothermoplasmonic tweezer (LFET) that provides low-power, high-stability and continuous dynamic manipulation of a single nanodiamond. LFET harnesses the combined action of the laser illumination of a plasmonic nanopillar antenna array and low-frequency alternating current (ac) electric field to establish an electrohydrodynamic potential capable of the stable trapping and dynamic manipulation of single nanodiamonds. We experimentally demonstrate the fast transport, trapping, and dynamic manipulation of a single nanodiamond using a low-frequency ac field below 5 kHz and low-laser power of 1 mW. This nanotweezer platform for nanodiamond manipulation holds promise for the scalable assembly of single photon sources for quantum information processing and low noise quantum sensors.
| Original language | English |
|---|---|
| Pages (from-to) | 4921-4927 |
| Number of pages | 7 |
| Journal | Nano Letters |
| Volume | 21 |
| Issue number | 12 |
| DOIs | |
| State | Published - Jun 23 2021 |
Funding
The authors acknowledge financial support from the National Science Foundation (NSF ECCS-1933109) and Vanderbilt University. A portion of this research was conducted at the Center for Nanophase Materials Sciences, which is a DOE Office of Science User Facility.
Keywords
- electrohydrodynamics
- nanodiamond
- nanotweezers
- photothermal effect